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参数资料
| 型号： | LT1791HS#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/RS422 60V 14-SOIC |
| 标准包装： | 2,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 带卷 (TR) |
LT1785/LT1785A/
LT1791/LT1791A
4
178591fc
DC ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C, VCC = 5V.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VOD1
Differential Driver Output Voltage (Unloaded)
IO = 0
l
4.1
5
V
VOD2
Differential Driver Output Voltage (With Load)
R = 50Ω (RS422), Figure 1
R = 27Ω (RS485), Figure 1
R = 18Ω
l
2.0
1.5
1.2
2.70
2.45
2.2
V
VOD
Change in Magnitude of Driver Differential Output
Voltage for Complementary Output States
R = 27Ω or R = 50Ω, Figure 1
l
0.2
V
VOC
Driver Common Mode Output Voltage
R = 27Ω or R = 50Ω, Figure 1
l
2
2.5
3
V
Δ|VOC|
Change in Magnitude of Driver Common Mode Output
Voltage for Complementary Output States
R = 27Ω or R = 50Ω, Figure 1
l
0.2
V
VIH
Input High Voltage
DI, DE, RE
l
2V
VIL
Input Low Voltage
DI, DE, RE
l
0.8
V
IIN1
Input Current
DI, DE, RE
l
5μA
IIN2
Input Current (A, B); (LT1791 or LT1785 with DE = 0V)
VIN = 12V
VIN = –7V
–60V ≤ VIN ≤ 60V
l
–0.15
–6
0.15
–0.08
0.3
6
mA
VTH
Differential Input Threshold Voltage for Receiver
LT1785/LT1791: –7V ≤ VCM ≤ 12V
LT1785A/LT1791A: –7V ≤ VCM ≤ 12V
l
–0.2
0.2
0
V
ΔVTH
Receiver Input Hysteresis
–7V < VCM < 12V
20
mV
VOH
Receiver Output High Voltage
IO = –400μA, VID = 200mV
l
3.5
4
V
VOL
Receiver Output Low Voltage
IO = 1.6mA, VID = –200mV
l
0.3
0.5
V
Three-State (High Impedance) Output Current at
Receiver 0V < VOUT < 6V
RE > 2V or Power Off
l
–1
1
μA
RIN
Receiver Input Resistance (LT1791)
–7V ≤ VCM ≤ 12V
– 60V ≤ VCM ≤ 60V
l
85
125
kΩ
LT1785
–7V ≤ VCM ≤ 12V
l
50
90
kΩ
RS485 Unit Load
0.25
ISC
Driver Short-Circuit Current
VOUT = HIGH, Force VO = –7V
VOUT = LOW, Force VO = 12V
l
35
250
mA
Driver Output Fault Current
VO = 60V
VO = –60V
l
–6
6mA
mA
Receiver Short-Circuit Current
0V ≤ VO ≤ VCC
l
±35
mA
Driver Three-State Output Current
–7V ≤ VO ≤ 12V
–60V ≤ VO ≤ 60V
l
–0.2
–6
0.3
6
mA
ICC
Supply Current
No Load, RE = 0V, DE = 5V
No Load, RE = 5V, DE = 5V
No Load, RE = 0V, DE = 0V
No Load, RE = 5V, DE = 0V
l
5.5
4.5
0.2
9
8
0.3
mA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1791I | 制造商:LINER 制造商全称:Linear Technology 功能描述:60V Fault Protected RS485/RS422 Transceivers |
| LT1791IN | 功能描述:IC TXRX RS485/RS422 60V 14-DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1791IN#PBF | 功能描述:IC TXRX RS485/RS422 60V 14-DIP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1791IN-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:60V Fault Protected RS485/RS422 Transceivers |
| LT1791IN-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:60V Fault Protected RS485/RS422 Transceivers |
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